<script setup lang="ts">
import type { mastodon } from 'masto'
import { toggleFollowAccount, useRelationship } from '~/composables/masto/relationship'

const { account, context, command, ...props } = defineProps<{
  account: mastodon.v1.Account
  relationship?: mastodon.v1.Relationship
  context?: 'followedBy' | 'following'
  command?: boolean
}>()

const { t } = useI18n()
const isSelf = useSelfAccount(() => account)
const enable = computed(() => !isSelf.value && currentUser.value)
const relationship = computed(() => props.relationship || useRelationship(account).value)
const isLoading = computed(() => relationship.value === undefined)

const { client } = useMasto()

async function unblock() {
  relationship.value!.blocking = false
  try {
    const newRel = await client.value.v1.accounts.$select(account.id).unblock()
    Object.assign(relationship!, newRel)
  }
  catch (err) {
    console.error(err)
    // TODO error handling
    relationship.value!.blocking = true
  }
}

async function unmute() {
  relationship.value!.muting = false
  try {
    const newRel = await client.value.v1.accounts.$select(account.id).unmute()
    Object.assign(relationship!, newRel)
  }
  catch (err) {
    console.error(err)
    // TODO error handling
    relationship.value!.muting = true
  }
}

useCommand({
  scope: 'Actions',
  order: -2,
  visible: () => command && enable,
  name: () => `${relationship.value?.following ? t('account.unfollow') : t('account.follow')} ${getShortHandle(account)}`,
  icon: 'i-ri:star-line',
  onActivate: () => toggleFollowAccount(relationship.value!, account),
})

const buttonStyle = computed(() => {
  if (relationship.value?.blocking)
    return 'text-inverted bg-red border-red'

  if (relationship.value?.muting)
    return 'text-base bg-card border-base'

  // If following, use a label style with a strong border for Mutuals
  if (relationship.value ? relationship.value.following : context === 'following')
    return `text-base ${relationship.value?.followedBy ? 'border-strong' : 'border-base'}`

  // If loading, use a plain style
  if (isLoading.value)
    return 'text-base border-base'

  // If not following, use a button style
  return 'text-inverted bg-primary border-primary'
})
</script>

<template>
  <button
    v-if="enable"
    gap-1 items-center group
    border-1
    rounded-full flex="~ gap2 center" font-500 min-w-30 h-fit px3 py1
    :class="buttonStyle"
    :hover="!relationship?.blocking && !relationship?.muting && relationship?.following ? 'border-red text-red' : 'bg-base border-primary text-primary'"
    @click="relationship?.blocking ? unblock() : relationship?.muting ? unmute() : toggleFollowAccount(relationship!, account)"
  >
    <template v-if="isLoading">
      <span i-svg-spinners-180-ring-with-bg />
    </template>
    <template v-else>
      <template v-if="relationship?.blocking">
        <span elk-group-hover="hidden">{{ $t('account.blocking') }}</span>
        <span hidden elk-group-hover="inline">{{ $t('account.unblock') }}</span>
      </template>
      <template v-if="relationship?.muting">
        <span elk-group-hover="hidden">{{ $t('account.muting') }}</span>
        <span hidden elk-group-hover="inline">{{ $t('account.unmute') }}</span>
      </template>
      <template v-else-if="relationship ? relationship.following : context === 'following'">
        <span elk-group-hover="hidden">{{ relationship?.followedBy ? $t('account.mutuals') : $t('account.following') }}</span>
        <span hidden elk-group-hover="inline">{{ $t('account.unfollow') }}</span>
      </template>
      <template v-else-if="relationship?.requested">
        <span elk-group-hover="hidden">{{ $t('account.follow_requested') }}</span>
        <span hidden elk-group-hover="inline">{{ $t('account.withdraw_follow_request') }}</span>
      </template>
      <template v-else-if="relationship ? relationship.followedBy : context === 'followedBy'">
        <span elk-group-hover="hidden">{{ $t('account.follows_you') }}</span>
        <span hidden elk-group-hover="inline">{{ account.locked ? $t('account.request_follow') : $t('account.follow_back') }}</span>
      </template>
      <template v-else>
        <span>{{ account.locked ? $t('account.request_follow') : $t('account.follow') }}</span>
      </template>
    </template>
  </button>
</template>
